diff --git a/go.mod b/go.mod
index 48463dfb..1e9b3c5d 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.20
 require (
 	github.com/CosmWasm/wasmd v0.29.1
 	github.com/CosmWasm/wasmvm v1.1.1
-	github.com/cosmos/cosmos-sdk v0.45.9
+	github.com/cosmos/cosmos-sdk v0.45.16
 	github.com/cosmos/ibc-go/v3 v3.3.0
 	github.com/gogo/protobuf v1.3.3
 	github.com/golang/protobuf v1.5.2
@@ -20,7 +20,7 @@ require (
 	github.com/spf13/cobra v1.5.0
 	github.com/spf13/pflag v1.0.5
 	github.com/stretchr/testify v1.8.0
-	github.com/tendermint/tendermint v0.34.21
+	github.com/tendermint/tendermint v0.34.27
 	github.com/tendermint/tm-db v0.6.7
 	github.com/tidwall/gjson v1.14.3
 	github.com/tidwall/sjson v1.2.5
@@ -144,4 +144,8 @@ replace (
 	github.com/gogo/protobuf => github.com/regen-network/protobuf v1.3.3-alpha.regen.1
 	google.golang.org/grpc => google.golang.org/grpc v1.33.2
 
+	// use informal system fork of tendermint
+	// See https://twitter.com/informalinc/status/1613580954383040512
+	// See https://github.com/cosmos/cosmos-sdk/releases/tag/v0.45.15
+	github.com/tendermint/tendermint => github.com/cometbft/cometbft v0.34.27
 )